Deos RTEMS

Description

This project is to enable RTEMS, a single process POSIX executive, to run within a Deos process.

The multi-phased project strategy is described in a spreadsheet Bill has, based on some gross effort estimates.

At this time spending authorization is only for the first phase, basically a demo and planning for future phases.

Joel Sherrill is the technical contact at OAR.

The RTEMS tools are now available in a Cygwin 2018 install and an crude example exists.

Planning and coordination between DDCI and OAR is currently happening in some Google docs:

1. Deos/RTEMS Roadmap
2. Task list (Old task list)
3. Installation task list

TODO/Issues

These need to be integrated into above development task list.

1. Requires cygwin 2016
2. Requires rtems-package
3. OpenArbor 6.6.3 related issues:
   • Requires desk/rtems-environment.py and desk/bin/gcc-rtems-environment.py to be included in the DDS
4. elfcheck.py fails in this environment with error "/bin/sh: i686-pc-elf-objdump: command not found"
5. cpu-usage-example is here: https://deos.ddci.com/svn/DDCI/rtems-products/examples/branches/mainline/code/rtems-cpu-usage/
6. Have OAR deliver the compilers in such a way as to remove the manual steps required by ftp://redhat5.ddci.com/rtems-products/README.txt
7. Get PPC (and eventually ARM) compilers and tools. Ideally using the same prefix (e.g., i686-pc-elf) as used by the DDCI compilers.
8. IO integration
   1. Com port
   2. General pthread/partition blocking issues

• RTEMS more capabilities
  1. mmap() methods
  2. shm_open() methods
  3. posix_devctl()
  4. Make RTEMS library/libraries into an .so

• DDCI
  1. Debugging the example is problematic. Stepping into an rtems function does not work.
  2. Need pthread aware debugging and status monitor displays
  3. TCP/IP
  4. ARINC 653 required calls (Health and Ports) - calls should be available now. Example being developed at face653-examples
  5. Integration issues with early July 2018 drop
     • RTEMS delivery had extra /5 in path. OAR informed and next drop should not have that. DDC-I removed the extra /5 directory in current 5.0.3 tools and adapter packages.
     • deos_arm, deos_ppc, deos_x86 must be renamed to deos for OpenArbor. Lisa has an email to change OA.
     • -Wl,-Bshareable -Wl,-shared should be removed from link options
     • -rpath-link is needed for Deos appbin and lib directories when using face653 library for ports/HM calls
  6. deos2cygwin bundles
     • figure out packages such as rtems, 653, rtems+653, and ensure face653-examples is set appropriately
       • Marketing would like to be able to package/sell rtems without 653 and full FACE
       • Currently to get all you specify the proper deos-rtems-{arm|ppc|x86}, deos653p2, and deos-rtems-face653-examples